python - 将字典的键写入文本文件

Question

如何将字典的键逐行写入文本文件，即每行一个键？如果有任何指向相同的链接，请引导我到该链接。我可以找到将文本文件内容加载到字典中，但反之亦然。

Answer 1

如果您只想打印键（即不是值），您可以简单地遍历字典：

with open("filename", "w") as f:
    for key in dict:
        print >>f, key

或者在 Python 3 中，使用新的 print 函数：

with open("filename", "w") as f:
    for key in dict:
        print(key, file=f)

Answer 2

At the bare minimum, something like this will work:

fp = open('filename','w');
for k,v in myDict.items():
 fp.write('%s=%s\n', k, v);
 #for writing just the key per line
 #fp.write('%s\n',k);

fp.close();

you might need sanity checks for presence of '=' in key and escaping '\r' '\n' in value with \r and \n